ERTH 1030 Lecture Notes - Hydrosphere, Cryosphere, Great Circle
5 Feb 2014
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Document Summary
5 overriding themes (pages 4- 5: location, place, region, human- earth relations, movement. Systems- the interconnection of matter and energy. Anthroposphere (technospere)! anthropogenic: created by humans. Cryosphere ! ice, frozen stuff; is sometimes blended with hydrosphere. Chapter 1: how physical geographers think (scientific approach) How to place things on the earth: Meridian lines: great circles are centered through the middle of the earth, most often 15 degrees apart. Do not go through earth"s center. The equator is a great circle. Put these two together and you get . International date line: essentially 180 east or west of greenwich, england. Halifax"s approximate coordinates are 45 n 63 w. The tilt of the axis. Northern axis towards the sun=summer. Northern axis farther from the sun=winter. If the reason for seasons was distance- from- sun related, we would always have the same hemisphere seasons. What makes a good map?- scale, color, grid (lat, long), title, legend, north arrow, altitude, date of creation.
